Generator driving apparatus



May 23, 1933. G. E. HULSE GENERATQR DRIVING APPARATUS Filed March 25. 1950 2 Sheets-Sheet l ATTORNEY-S May 23, 1933.

- G. E. HULSE GENERATOR DR IV I NG APPARATUS Filed March 25, 1950 2 Sheets-$hee1i 2 GEORGE:

Patented May 23, 1933 GENEBA ToR ia n viimfaireaaiius f ii 'i tioi aiea fiarch 1930. se ial No. 43 8;7l)8.

This invention relates to power transmission apparatus, and more specifically to fea tures of such apparatusparticularly adapted for use in driving generators from car axles.

One of the objects thereof=is to provide practicalappar'atusof the above nature of simple and secure construction. Other ob jects are to provide apparatus of the above nature in which the action is dependable and in which the parts are readily assembled and taken apart. Another object is'to provide apparatus of the" above-nature particularly adapted to meet eflectively the severe conditionsofconstruction and use inherent in drivingfrom car axles. Other objectswill be in part obvious ortin pa'rtrpointed out hereinafter? l The invention accordingly consists in the features of construction, combinations o'felements, and arrangements of parts, as will'be illustratively described herein, and the scope of the application ofwhich willbe indicated in thefollowing' claims; p i i a 1 In the accompanying drawings, in which is sh owng one of various possible embodimentsof this invention.- 7 f Figure l is an end viewof-parts mounted upon'acar axle; Fi 2 is a longitudinal section t'aken substantially along the line'2 2 of Fig. '1; Fig. 3 is a planof a securing-device; 3 Fig.4 is aside elevation of the device showninFig.3;and

*Fig. 5 isanend viewof'the parts shown inFigsl3and4. S iI filar reference characters refer to similar parts throughout the several figures of thedrawingsi. 1

Having reference now to this embodiment, there is shown at 10 a portionofa car axle, which may be. generically referred to as a shaft. It may here be noted that the term shaft is throughout in a broad se n'se to denoteeany rotatable member adapted to carry another to-rotate therewith. The member 10 iSQ Sl'iOWII, as ofQthe tapering form common to car axles, whichconformation in creases the difliculties 1 in securely and practically mounting rotary members thereon.

{At ;11,is a sprocket wheel; gear split formed that when assembled they combine to E. n LsE; o =N w HAVEN, oonnEc'ricurrQasslei ion TO- T HE lSA IE'l-YCAB- nEA'rmea LIGHTING comrANY, Aconrom'non or qEw JERSEYM alonga radial plane into two" parts and' so provide a gear or sprocketmemberin which 7 the proper pitchdistance betWeenthe teeth is maintained entirely about the j circumference.) The memberj 11 (seeiF-ig52 is provided with 'a pair oficircuniferential shoul ders 12 and 13 [andistape'red about its inner surface 14in a direction p'ppositeto thetape'r of the axle 10J- Respectivelyembracing the sh oulders I2 and 13 are'fa' pair of splitcollars 15 and 16 each formed in -two.-part-s,F asbest shownin Fig. 2f'of'the drawings, and each held tightly in 'a'ss'embled relatioii, "as iby the bolts 17; It isfto be understood that the collars 15 and 16 are so proportioned that when the severa'lbolts 17 are tightened,'the

parts of the sprocket'm'emberll are so firmly clamped together as to 'remain virtuall as one piece'in use; Thusthe opposite s'ur aces of the shoulders 12fand 13am the collars 15 and" lfirespectively may be tapered atop'posite angles to" form 'a'n j interlock therebe- .t eem 'orH theSe; parts may' be secured ';to- Qgether by'rivets as is found convenient in the preferred embodiment ofi'r'ny invention. i jInterposed 'between the inner surface 14 of the sprocket and the outer oppositely tapering surface ofthe axle 10 are a pluralityof equally spaced wedge niembers 18. "These members are here shown as four innumber j andar'e so proportioned asto subtend in the aggregate" the finaj or r portion of the a surface of the axle 10in a circumferential direction; In "other words, theyfare preferablyso dis- 'ad acentmemberS is less than thespace which posed and formedthat the space-"between members 1-8, the detailsbf whichare shown in Figs. 3,4 and 5 of thejdrawings, it' is noted that' each isprovided with an outwardly flext'ending" 1 1g "19 through which passes a machine screw 20 into the collar 15 or other part of the outer rotary device. The inner and outer sarfae s of the member 18 taperii oppos te directionslongitudinally thereof in such "mannerthat when tween the inner surface 14 of the sprocket and the outer surface of the axle, the plane of rotation of the former will be perpendicular to the centerline of the axle.

The outer surface of the member 18, more over, is provided with a pair of spaced bearing surfaces 21, and its inner surface with a pair of spaced bearing surfaces 22' By this disposition 'of'the hearing. surfaces, slight 'imperfection's, pariticularlyiin the outer surface of the axle, are preventedfrom interfering with closeness of lit with thewedge members 18. Furthermore, the pressure is localized and thereby intensified seas tomake a more secl'ire contact iand lessen any effectof dirt or other foreign matter on the parts with which these surfacesengage.

In action, theicollarsc and sections of the sprocket member areassenibled as ,above noted, and -.-the latter is positioned at the desired ipoi-nt longitudinally of the @axle. The wedges 18 arethen drawn home by means ofthe screws 20, andby their aggregate effect mount thesprocket precisely at rightanglesto the. centerlineof the axle and concentricallydisposed with respect thereto. It will, be seen thatthe-concentricity maybe corrected by la-proper longitudinalpositioning of-the wedges, and that the conformation of the latter avoids any ftendenc-y to distortion of the'sprooket out of its ,true circular 'for-m.- This arrangement,furthermore, even .under the'seyere conditionsof use of a railway axleanda wide rangeof VHIIELt-IODJI} temperature, prevents any loosen ng of the sprocket,- although, if is desired to remove it, this is readily done, as,ifor example, by opening up thesplit collars (1V5 and,16.

It will thus be seen thatthere is provided apparatusin which the vse veral objects-of this inventionare achieved; and that-this apparatus is not only essentiallyworkable and practical, 'butican be dependedmpon to remain inefficient action I under conditions of long-continued use.

many possible embodiments may be made of the -above invention, and as many changes might be made. in the embodiment .aboveset forth, it is-to be understood vthat all matter he-reinbefore set forth or shown in the accompanying. drawings, is to be interpreted as illustrative and-not ina limiting sense.

' 1. In power transmission apparatus, in

combination, a shaft, an. outer member =divided into secti'0nS ,-;:means encirclingsaid sectionsof said outermember to hold said-sea tions in assembled relation aboutsaid'shaft, a plurality of spaced 'membersinterposed between said outermember and said-shaft,

andmeans securing said spaced members to said encircling 'ine'alns. f 1

'2, In power'transm'ission apparatus, in combination,fa shaft, an outer member cliv'ided into sections, a pair of collars adapted to hold said sections in assembled relation about said shaft, a plurality of members wedged between said outer member and said shaft, and means adapted to secure said interposed members to one of said collars.

3. In power transmission "apparatus, in combination, a tapering shaft, an outer member divided into two circumferential sec- :tions, meansadap'ted to hold the sections of said outer member in assembledv relation about said shaft, said outer member having its inner-surface tapering in a direction opposite to that of the shaft, and wedge members substantially spaced about said shaft both surfaces of which .taper to fit the inner surface of the] outer member and the outer surface of the shaft, said wedge members being secured to said holdingmeans.

4. In power transmission apparatus, in combination, a tapering shaft, an ;outer member divided into v two circumferential sections, means adapted to-hold the sections of said outer member in assembled relation about saidshaft, a plurality of wedge members interposed between said shaft andsaid sections, andbolts extending thro-ughsaid wedge members and threaded into said encircling'member, v ,c i

6. In ,power transmission apparatus, in combination,a shaft, a driving part including a plurality of sections disposed about the circumference of said shaft, ainember encircling said sections to hold said sections in position about said shaft,;a plurality of wedge members interposed between said driving part andsaid shaft andjhavin glport'ions extending radially into substantial'reg' istry with said encircling member, bolts ex tending through said last-mentioned portions and threaded into s'aidencircli'ng mem her to draw sald wedge members intoioperative positlon, andimeans connecting said encircling member'with said sections.

7 In power transmission apparatus, in

combination, a shaft, a driving 'p'a'rtlincl'uding'a plurality of sections disposed about "the circumference of said shaft, a member encircling said sections I to hold said sections in position about said shaft, plurality "of v wedge members interposedbet-ween said shaft and said sections, said wedge members having substantially spaced bearing surfaces in engagement with said shaft, and

means connecting said wedge members with said encircling member.

8. In power transmlssion apparatus, in

combination, a shaft, a driving part including a plurality of sections disposed about the circumferenceof said shaft, a member en circling said sections to hold said sections in position about said shaft, a plurality of 'wedge members interposed between said shaft and said sections, said wedge members having substantially spaced bearing surfaces in engagement with said shaft, means connecting said encircling member March, 1930.

parts to grip said collar members about said sections, means for securin said collar members to said sections, sai wedge members having radiallyextendmg portions at one end thereof, and bolts extending through said radially'extending portions and threaded into said collar members.

In testimony whereof, I have si ed my name to this specification this 12t day of G ORGE E. HULSE,

with said sections, and means securing said a wedge members to said encircling member.

9. In power transmission apparatus, in combination, a shaft, a driving member comprising a plurality of individual sections disposed about the circumference of said shaft,

a collar member comprising two parts encircling said sections, a plurality of wedge members interposed between said sections and said shaft, means connecting said parts to grip said sections into position, and means connecting said wedge members with said encircling collar.

10. In power transmission apparatus, in combination, a shaft, a driving member comprising a plurality of individual sections disposed about the circumference of said shaft, a collar member comprising two parts encircling said sections, a plurality of wedge members interposed between said sections and said shaft, means connecting said parts to grip said sections into position, said encircling collar being secured to said sections,

and bolts extending through portions of said wedge members and threaded into said enbers encircling said driving member substantially at its opposite ends, means for securing said collar members to said sections, said wedge members having radially extending portlons at one end thereof, and bolts extending through said radially extending portions and threaded into said collar members.

.12. In power transmission apparatus, in combination, a shaft, a driving member comprising a plurality of circumferential sections disposed about said shaft, a plurality of wedge members interposed between said sections and said shaft, said wedge members having substantially spaced bearing surfaces contacting said shaft, a pair of collar mem- 

